Volume 19, Issue 1 (4-2011)                   www.ijcm.ir 2011, 19(1): 113-120 | Back to browse issues page

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Mineralogical properties of hydrothermal analcime in volcanic rocks of South Kahrizak. www.ijcm.ir. 2011; 19 (1) :113-120
URL: http://ijcm.ir/article-1-471-en.html
Abstract:   (501 Views)

Analcime along with other zeolite group minerals such as: Tetranatrolite, Natrolite, Mesolite, Scolcite, Heulandite, Stilbites and, levyne occur as vein and cavity filling minerals in the intermediate to basic volcanic rocks in South Kahrizak. Scanning Electron Microscopy (SEM) of microcrystaline analcime reveal pseudo-cubic prismatic faces of [211] containing laminations perpendicular to the elongation of the crystals. These laminations are due to crystal growth mechanism and are characteristics of hydrothermally formed analcime (H-type). X-ray diffraction study has revealed a pseudocubic symmetry for analcime with unit-cell parameters of:             a = 13.6974(51) Å, b = 13.6874(124) Å, C = 13.6637(311) Å, V = 2561.695 Å3 .

Raman spectrum of the sample shows vibrational mode frequency for H2O molecules in analcime at about 3500 cm-1.

Full-Text [PDF 122 kb]   (118 Downloads)    
Type of Study: Research | Subject: Special
Received: 2017/05/15 | Accepted: 2017/05/15 | Published: 2017/05/15

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